December weather forecastRengo, Chile

December

Weather in December

The grandeur of summer rises to its peak in December in Rengo, Chile. The cheerful spirits of the festive season and the amicable weather form a captivating alliance. The city revels in the warmth of the season, basking in the sun's generous glow. The seasonal climate enjoys the highest daylight hours of 14.4h, spotlighting the coming of longer and warmer days. Conclusively, December blossoms in the utmost heat of the year, and exudes a radiant, festive atmosphere.

Temperature

December observes an average high-temperature of a still moderately hot 27.1°C (80.8°F), marking an insignificant difference from November's 24.2°C (75.6°F). Against the high December temperatures, Rengo records an average drop to a fresh 10.5°C (50.9°F) at night.

Heat index

In December, the heat index is calculated to be 27°C (80.6°F). Long-standing exposure and activity could induce a feeling of tiredness and lead to heat cramps.
One should consider that heat index numbers are for shaded settings and light wind. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is the result of factoring in humidity to the air temperature, indicating perceived warmth. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.

Humidity

In Rengo, the average relative humidity in December is 47%.

Rainfall

In December, in Rengo, Chile, the rain falls for 2.5 days. Throughout December, 7mm (0.28") of precipitation is accumulated. In Rengo, during the entire year, the rain falls for 61.6 days and collects up to 373mm (14.69") of precipitation.

Daylight

The month with the longest days in Rengo is December, with an average of 14h and 24min of daylight.
On the first day of December in Rengo, Chile, sunrise is at 06:24 and sunset at 20:41. On the last day of the month, sunrise is at 06:34 and sunset at 20:59 -03.

Sunshine

The average sunshine in December in Rengo is 9.7h.

UV index

The average daily maximum UV index in December is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, a daily UV index of 5 turns into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.

Updated: Jan 24, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Rengo, 27.1°C (80.8°F) is the average high-temperature and 10.5°C (50.9°F) is the average low-temperature during December. In December, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, is calculated to be 27°C (80.6°F).

The average relative humidity in December in Rengo is 47%.

In December, the rain falls for 2.5 days. Throughout December, 7mm (0.28") of precipitation is accumulated.

With an average of 14h and 24min of daylight, December has the longest days of the year in Rengo, Chile.

In Rengo, the average day length in December is 14h and 25min.

In December, on the first day of the month, sunrise is at 06:24 and sunset at 20:41. On the last day of the month, in Rengo, sunrise is at 06:34 and sunset at 20:59 -03.

In Rengo, Chile, the average sunshine duration in December is 9.7h.

The average daily maximum UV index in December in Rengo is 5. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

24.2°C

27.1°C

29.2°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

8.3km/h

8.8km/h

9.1km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

28.1

27.7

Average UV index

Average cloud cover

12%

Average visibility

10km

Average temperature in December
Rengo, Chile

Average high temperature in December: 27.1°C

The warmest month (with the highest average high temperature) is January (29.2°C).
The month with the lowest average high temperature is July (12.2°C).

Average low temperature in December: 10.5°C

The month with the highest average low temperature is January (12.4°C).
The coldest month (with the lowest average low temperature) is July (2.3°C).

Average pressure in December
Rengo, Chile

Average pressure in December: 1014.9mbar

The month with the highest atmospheric pressure is July (1019.9mbar).
The months with the lowest atmospheric pressure are January and February (1014.3mbar).

Average wind speed in December
Rengo, Chile

Average wind speed in December: 7.2km/h

The windiest months (with the highest average wind speed) are January and June (7.5km/h).
The calmest month (with the lowest average wind speed) is April (6.1km/h).

Average humidity in December
Rengo, Chile

Average humidity in December: 47%

The month with the highest relative humidity is July (66%).
The month with the lowest relative humidity is March (42%).

Average rainfall in December
Rengo, Chile

Average rainfall in December: 7mm

The wettest month (with the highest rainfall) is June (107mm).
The driest month (with the least rainfall) is February (1mm).

Average rainfall days in December
Rengo, Chile

Average rainfall days in December: 2.5 days

The months with the highest number of rainy days are June and July (8.9 days).
The month with the least rainy days is February (1.1 days).

Average daylight in December /
Average sunshine in December
Rengo, Chile

Average daylight in December: 14h and 24min

The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).

Average sunshine in December: 9h and 42min

The month with the most sunshine is February (Average sunshine: 10h and 0min).
The month with the least sunshine is June (Average sunshine: 7h and 42min).

Average sunshine days in December
Rengo, Chile

Average sunshine days in December: 28.1 days

The month with the most sunshine days is March (29 days).
The month with the least sunshine days is June (20 days).

Average UV index in December
Rengo, Chile

Average UV index in December: 5

The month with the highest UV index is January (UV index 6).
The months with the lowest UV index are May, June, July, August and September (UV index 3).

Average cloud cover in December
Rengo, Chile

Average cloud cover in December: 8

The month with the most cloud cover is June (Cloud cover 31).
The month with the least cloud cover is February (Cloud cover 4).

Average visibility in December
Rengo, Chile

Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).